ziggy, the shaft is 55mm. He used a piece of pvc pipe to shim it to the mount.

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Icon 550, on .90M primestar DG380 motor.10'Sami+GI650 for c-band.
Merc2 now on 1m primestar-polar mount backup system.
*Avatar-One of last summer's babies grazing in the yard.

Start with a piece of 2in PVC pipe, cut it to the length of the straight part of the motor tube then make two lengthwise cuts to remove about 1/2in from one side so its like a C. This is for relief of the PVC as its compressed around the motor tube and also to make your life easier with the assembly.

Great job!

I too love those Channel Master dishes.

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* 1.8m Fortec Dish, C-Band LNBF
* 1.8m CM Dish, AMC 1, DMS ASC421 C-Band LNBF, Coolsat 4000 Pro Receiver
* 1.2m CM Dish, SG2100 H-H, Sadoun KUL1 Standard Single LNBF, Coolsat 4000 Pro Receiver
* 36" X 26" CM (StarBand) Dish, Echostar 7, Sadoun DSL2 DSS Dual LNBF, Coolsat 4000 Pro Receiver
* 18" Dish, DirecTV, DSS LNBF, DirecTV DVR R10 Receiver
* Dish 1000+, Dish Network, DPP-44 Switch, VIP722 Receiver
* TERK TV-32 UHF Antenna, HD and SD Local (Pittsburgh)